Maps references to a Perl array. The persistent fields are grouped in
a hash under the array key in the field hash.
The array may contain only simple scalars like integers, strings
or real numbers. It may not contain references. For arrays of
objects, see Tangram::Type::Array::FromMany and Tangram::Type::Array::FromOne.
Tangram uses a table to save the state of the collection. The table
has three columns, which contain
The field names are passed in a hash that associates a field name with
a field descriptor. The field descriptor may be either a hash or a
string. The hash uses the following fields:
Optional field type specifies the type of the elements. If the type
is stringTangram quotes the values as they are passed to the
database. Not specifying a type is exactly equivalent to
the id of the container object
the position of the element in the array
the value of the element
Optional field table sets the name of the table that contains the
elements. This defaults to C_F, where C is the class of the
containing object and F is the field name.
Optional field sql specifies the type that deploy() (see
Tangram::Deploy) should use for the column containing the
elements. If this field is not present, the SQL type is derived from
the type field: if type is string (or is absent) VARCHAR(255)
is used; otherwise, the type field is interpreted as a SQL type.
If the descriptor is a string, it is interpreted as the value of the
type field and all the other fields take the default value.